What are the lessons that you learn from nature​

Atoms of hydrogen are then balanced. Watch the following video to learn more about oxygen atoms. C12H22O11 with 12O2 equals 12CO2 plus 11H2O.

Balance C12H22O11 + O2 CO2 + H2O

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False, Asbestos is a naturally occurring mineral fiber that was commonly used in various industries due to its heat resistance, strength, and insulating properties.

Asbestos does not necessarily need to be removed if it will not be disturbed or pose a risk to human health. Asbestos-containing materials that are in good condition and undisturbed are generally considered safe. However, if asbestos-containing materials are damaged, deteriorating, or will be disturbed during renovation or demolition activities, it is necessary to take appropriate precautions, which may include professional removal or encapsulation, to prevent the release of asbestos fibers into the air. The decision to remove asbestos should be based on an assessment of its condition, potential for disturbance, and adherence to local regulations and guidelines.

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Answer:

The radiation of the Sun's electromagnetic waves

Explanation:

Earth's atmosphere keeps much of the Sun's energy from escaping into space. This process, called the greenhouse effect, keeps the planet warm enough for life to exist.

Divide the mass of oxalic acid by the molar mass of oxalic acid. The molar mass of oxalic acid is 90.03 g/mol.

Let's take an example. Suppose you used 1.5 grams of oxalic acid in trial 1. To find the moles of oxalic acid, you would divide 1.5 grams by 90.03 g/mol, which gives you 0.0167 moles. You would then record this value in the table for trial 1. Similarly, you would perform this calculation for all the other trials and record the values in the table.
In Part 3, Step 1, you are asked to calculate the moles of oxalic acid used in each trial. To do this, divide the mass of oxalic acid by its molar mass. Molar mass is the mass of one mole of a substance, and for oxalic acid (H2C2O4), it is approximately 90.03 g/mol. In your table, for each trial, record the mass of oxalic acid used and divide it by the molar mass (90.03 g/mol) to find the moles.

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Answer:

Explanation:

The light is on the right side of the moon from Earth's perspective. The light will never be on the bottom or top. Its either waxing or waning; left or right

The flaw in the representation is likely the absence of an external source of energy, as indicated in (option C). The electrolytic cell requires an external energy supply to drive the thermodynamically unfavorable decomposition of NaCl into Na and Cl₂.

The flaw in the representation can be identified by analyzing the given options:

A. Oxidation is occurring at the anode.

This statement is correct in terms of the electrolytic cell setup. Oxidation does occur at the anode, where chloride ions (Cl-) are oxidized to form chlorine gas (Cl₂).

B. Molten Na is shown at the cathode.

This statement is also correct. In the electrolytic cell, sodium ions (Na+) are reduced at the cathode, resulting in the formation of molten sodium (Na).

C. An external source of energy is not shown.

This statement is the most likely flaw in the representation. The decomposition of NaCl into Na and Cl₂ is an endothermic process, meaning it requires an input of energy from an external source for the reaction to proceed. The representation should include an external power supply or energy source to drive the electrolytic cell.

D. The direction of the electron flow in the wires is incorrect.

Without more specific information or visual representation, it is difficult to determine if the direction of electron flow in the wires is incorrect. This option cannot be confirmed as a flaw based solely on the information provided.

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Answer:

I have for Decompostion

Explanation:

A decomposition reaction occurs when one reactant breaks down into two or more products. It can be represented by the general equation: AB → A + B. In this equation, AB represents the reactant that begins the reaction, and A and B represent the products of the reaction

Answer:

The heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is colloid. Because colloid has particles that are small enough to suspended but are as large that they can scatter light.

Answer:

1. heterogeneous

2. colloid

3. suspension

A sample of gas occupies a volume of 58.6 mL.  At a constant pressure of 783 torr, it exerts 117.8 J of labor on its surroundings as it expands. So 1.14 mL is the final volume of the gas.

We can use the formula for work done by a gas at constant pressure:

work = pressure x change in volume

Since the pressure is constant at 783 torr, we can write:

117.8 J = 783 torr x (final volume - initial volume)

Converting torr to atm and mL to L:

117.8 J = 0.10366 atm x (final volume - 0.0586 L)

Solving for final volume:

final volume - 0.0586 L = 1136.33 L

final volume = 0.0586 L + 1136.33 L

final volume = 1136.39 L or 1.14 L (rounded to two decimal places)

Therefore, the final volume of the gas is 1.14 mL.

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Answer:

A homologous series is a family of hydrocarbons with similar chemical properties who share the same general formula. We will look at three hydrocarbon series: alkanes, alkenes and the cycloalkanes. Hydrocarbons are compounds that contain only hydrogen and carbon.

Explanation:

Answer:

D

Explanation:

there are 5 electrons in the outer shell of the first picture

According to electronic configuration, model 1 shows 5 electrons in the outer shell of the atom.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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Answer:

Because it's a system in the solar areas.

Explanation:

Im just tryna sound smart, I actually have no clue

Answer:

The Latin word for the Sun is Sol, so we call this system the Solar System. He showed that it was very likely that all the planets moved around the Sun. This time even more people thought Galileo may be right and that the Earth really did move around the Sun.

Explanation:

There are many planetary systems like ours in the universe, with planets orbiting a host star. Our planetary system is named the "solar" system because our Sun is named Sol, after the Latin word for Sun, "solis," and anything related to the Sun we call solar.

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The new pressure at STP if the volume remains constant is 4.15 atm.

To solve this problem, we need to use the combined gas law, which states that PV/T = constant.

First, we need to convert the temperature from 95.3 degrees Celsius to Kelvin by adding 273.15. This gives us a temperature of 368.45 K.

Next, we can use the given pressure and temperature to find the initial volume of the gas using the ideal gas law, which states that PV = nRT. We can assume that the amount of gas (n) and the gas constant (R) remain constant, so we can rearrange the equation to solve for V:

V = (nRT)/P

Plugging in the values given, we get:

V = (nRT)/P = (nR(368.45 K))/(6.3 atm)

Now, we can use the combined gas law to find the new pressure at STP (standard temperature and pressure, which is 0 degrees Celsius or 273.15 K and 1 atm). Since the volume remains constant, we can set the initial pressure and temperature equal to the final pressure (P2) and temperature (T2), respectively:

(P1V1)/T1 = (P2V1)/T2

Simplifying, we get:

P2 = (P1/T1) x T2

Plugging in the values for P1, T1, and T2, we get:

P2 = (6.3 atm/368.45 K) x 273.15 K

Solving for P2, we get:

P2 = 4.15 atm

Therefore, the new pressure at STP if the volume remains constant is 4.15 atm.

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In the following acid-base reaction, hpo₄²⁻ is the base.

This can be seen as it accepts a proton (H⁺) from H₂O to form the conjugate acid, H₂PO₄⁻. The other reactant, H₂O, donates the proton, making it the acid in the reaction. It is important to note that in an acid-base reaction, the species that donates a proton is the acid and the species that accepts the proton is the base.

The strength of the acid and base can also be determined by the equilibrium constant of the reaction. The larger the equilibrium constant, the stronger the acid or base. In this particular reaction, hpo₄²⁻ is a weak base, as it only partially accepts the proton from H₂O.

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Answer:

C) Potassium, K, and calcium, Ca

Explanation:

Given pair of elements:

Ni and Cu

Potassium and Ca

Nitrogen and oxygen

Solution:

We know that number of protons and number of electrons are always equal and number of electron or number of proton is called atomic number.

Number of protons given elements:

Ni number of protons = 28

Copper number of protons  = 29

Combine number of protons = 57

K number of protons  = 19

Ca number of protons = 20

Combine number of protons = 39

Ni number of protons  = 7

O number of protons  = 8

Combine number of protons = 15

Thus,  option C is correct.

The process by which we pass a metal to shape, form, or improve a metal through compression or stretching is the process that we refers to as forging the metal.

We know that metals can be used for a number of purposes. In fact the raw metal must be passed through a process that makes the metal quite fit for use. We refer to this process that the metal passes as the process of refining.

Now the process by which we pass a metal to shape, form, or improve a metal through compression or stretching is the process that we refers to as forging the metal.

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1. True - An activity series lists metals from most easily oxidized to least easily oxidized.

2. False - Atoms do not move from lower energy to higher energy locations during a chemical reaction.

3. True - In a single displacement reaction, an element reacts with a compound, and part of the compound is released to become a free element.

4. False - Spectator ions do not undergo oxidation or reduction during a chemical reaction.

Let's evaluate each statement one by one:

1. An activity series is a list of metals from most easily oxidized to least easily oxidized. (True)

An activity series is a list that ranks metals based on their reactivity with other substances, particularly their tendency to undergo oxidation. Metals higher in the activity series are more easily oxidized, meaning they lose electrons more readily and are more reactive. Metals lower in the series are less likely to undergo oxidation and are therefore less reactive.

2. Atoms move from lower energy to higher energy locations during a chemical reaction. (False)

During a chemical reaction, atoms rearrange and form new bonds, but they do not move from lower energy to higher energy locations. Chemical reactions involve the breaking and formation of chemical bonds, which involves the rearrangement of electrons. In most cases, chemical reactions occur in a way that favors a decrease in the overall energy of the system.

3. In a single displacement reaction, an element reacts with a compound and part of the compound is released to become a free element. (True)

In a single displacement reaction, also known as a substitution reaction, an element reacts with a compound, displacing another element within the compound. The displaced element is released and becomes a free element, while the reacting element takes its place within the compound. This type of reaction is characterized by the exchange of ions or atoms between different chemical species.

4. Spectator ions are both oxidized and reduced during a chemical reaction. (False)

Spectator ions are ions that are present in a chemical reaction but do not undergo any changes themselves. They are not oxidized or reduced. Instead, spectator ions remain in their original form before and after the reaction, only observing and not actively participating in the redox (oxidation-reduction) process.

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Explanation:

A. Exothermic .... the Enthalpy of products is less than Enthalpy of reactants

B. For the forward reaction,

A + B --> C + D

∆H(A+B) = 200Kj/mol

∆H(C+D) = 100Kj/mol

∆H = ∆P - ∆R = 100 - 200 = -100KJ/mol

For backward reaction,

C + D ---> A+B

∆H(A+B) = 200Kj/mol

∆H(C+D) = 100Kj/mol

∆H = ∆P - ∆R = 200 - 100 = 100KJ/mol [ Forward is exothermic, backward is endothermic]

C. ... Activated complex should be the peak---that 600kj/mol

D. Activation energies -->

For forward reaction,

Activation energy = (600 - 200) = 400Kj/mol [That's the energy required for the reaction to occur]

For backward reaction, [here, C + D are the reactants ]

Activation energy = (600 - 100) = 500KJ/mol

The forward reaction is to proceed faster because it requires less energy to be overcome, I think.

Answer:

It would be better if you posted the question, thank you.

Explanation:

The Wittig reaction is a widely used organic synthesis technique that involves the reaction of a carbonyl compound such as an aldehyde or a ketone with a phosphonium salt to form an alkene.

Organic synthesis is the process of constructing organic molecules from simple, commercially available starting materials. This process involves a wide variety of reactions and techniques, such as condensation reactions, oxidation reactions, reduction reactions, cyclizations, rearrangements, and more.

The reaction is typically carried out in an ether solvent such as diethyl ether, and a base such as sodium hydroxide is added to assist with the reaction. 95% ethyl alcohol is then added to the reaction mixture to make the reaction more efficient. Iodine is also used in the reaction as a catalyst to enhance the reaction rate. The overall reaction results in the deprotonation of the phosphonium salt resulting in the formation of an alkene. (1)
Deviations from the published procedure include the use of a slightly different solvent in which to perform the reaction. Instead of using diethyl ether, which is the main solvent used in this reaction, a combination of diethyl ether and 95% ethyl alcohol is used to aid in the reaction. Additionally, the use of iodine as a catalyst is not mentioned in the original procedure, but it is commonly used to enhance the reaction rate.
In summary, the Wittig reaction involves the reaction of a carbonyl compound with a phosphonium salt in an ether solvent. Sodium hydroxide is used as a base to assist the reaction, while 95% ethyl alcohol is added to increase the reaction efficiency. Iodine is also used as a catalyst to enhance the reaction rate. Deviations from the published procedure include the use of a different solvent and the addition of iodine as a catalyst. (1)

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Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

volume = final volume of water - initial volume of water

volume = 75 - 50 = 25 mL

From the question we have

\(density = \frac{5}{25} = \frac{1}{5} = 0.2 \\ \)

We have the final answer as

Hope this helps you

Here is the answerregarding Functional group to your question using the provided terms:

(a) True, (b) True, (c) False, (d) True, (e) True, (f) True, (g) True, (h) True

(a) True - The functional group of an alcohol is the -OH (hydroxyl) group.
(b) True - The parent name of an alcohol is the name of the longest carbon chain that contains the -OH group.
(c) False - A primary alcohol has the -OH group on a carbon with only one other carbon attached, while a tertiary alcohol has the -OH group on a carbon with three other carbons attached.
(d) True - In the IUPAC system, the presence of three -OH groups is shown by the ending -triol.
(e) True - A glycol is a compound that contains two -OH groups. The simplest glycol is ethylene glycol, HOCH2CH2OH.
(f) True - Because of the presence of an -OH group, all alcohols are polar compounds.
(g) True - The boiling points of alcohols increase with increasing molecular weight.
(h) False - The solubility of alcohols in water decreases with increasing molecular weight.

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A bimetallic strip used in thermostats relies on the fact that different metals have different coefficients of thermal expansion. This means that when these metals are heated or cooled, they expand or contract at different rates.

The bimetallic strip in a thermostat consists of two different metals, such as brass and steel, bonded together. When the strip is exposed to a change in temperature, one metal will expand or contract more than the other due to their different coefficients of thermal expansion. This causes the strip to bend or curve, with the side of the metal that expands more facing away from the heat source.

In a thermostat, this bending motion is used to control the temperature. As the bimetallic strip bends in response to temperature changes, it either opens or closes a switch. For example, when the temperature in a room rises, the strip bends and opens the switch, turning off the heating system. Conversely, when the temperature drops, the strip bends the other way and closes the switch, turning the heating system back on.

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Answer:

\(\displaystyle K_a = \frac{[\text{H$_3$O}^+][\text{F}^-]}{[\text{HF}]}\)

Explanation:

Write the reaction of HF (a weak acid) with water:
\(\displaystyle \text{HF}_\text{(aq)} + \text{H$_2$O}_\text{($\ell$)} \rightleftharpoons \text{H$_3$O}^+_\text{(aq)} + \text{F}^-_\text{(aq)}\)

Recall that the equilibrium constant expression for an equilibrium reaction is the product of the concentration of the products over the product of the concentration of the reactants raised to their respective coefficients.

The equilibrium constant expression for this equation will hence be:

\(\displaystyle K_a = \frac{[\text{H$_3$O}^+][\text{F}^-]}{[\text{HF}]}\)

Note that pure solids and liquids are not included in the equilibrium expression.

In conclusion:

\(\displaystyle K_a = \frac{[\text{H$_3$O}^+][\text{F}^-]}{[\text{HF}]}\)

Answer:

repulsion

Explanation:

Answer:

Explanation:

In contrast to the attractive force between two objects with opposite charges, two objects that are of like charge will repel each other. ... Similarly, a negatively charged object will exert a repulsive force upon a second negatively charged object. Objects with like charge repel each other.

In any redox reaction, there are two half-reactions: oxidation and reduction. Oxidation is the process in which an element loses electrons, and its oxidation state increases. Reduction is the process in which an element gains electrons, and its oxidation state decreases.

In the given reaction, aluminum (Al) is reduced, and lithium (Li) is oxidized. This can be seen by examining the oxidation states of the elements in the reactants and products.

In Al(NO3)3(aq), the oxidation state of Al is +3, and in Al(s), the oxidation state of Al is 0. This means that Al gains three electrons and undergoes reduction.

In Li(s), the oxidation state of Li is 0, and in LiNO3(aq), the oxidation state of Li is +1. This means that Li loses one electron and undergoes oxidation.

Therefore, the element that is oxidized in the reaction is lithium (Li), and the element that is reduced is aluminum (Al).

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Increased electromotive force is sometimes referred to as electromagnetic induction, electromotive force induction, and induced electromotive force.

It is the creation of a voltage differential in a coil as a result of variations in the magnetic field flowing through it.To put it another way, it is said that electromotive force, or EMF, is created when the flux connecting with a conductor and coil changes.

Every time the magnetic flux in a closed circuit changes, an emf is generated.The current that circulates in the closed loop is known to as an induced emf, and this emf is known as the induced emf.

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You can fill in the table for other elements and their respective isotopes by determining the appropriate number of protons, neutrons, and electrons based on the given isotope mass number and atomic number.

To accurately fill in the table with the correct number of subatomic particles for the elements given the isotope mass number, we need to consider the composition of atoms and their respective subatomic particles. Atoms are composed of protons, neutrons, and electrons.

The number of protons in an atom is equivalent to its atomic number, which uniquely identifies the element. The number of neutrons can be determined by subtracting the atomic number from the isotope mass number. Electrons in a neutral atom are equal to the number of protons.

Let's take an example using the isotope mass number:

Isotope: Carbon-14 (mass number = 14)

Element: Carbon (atomic number = 6)Based on the atomic number and isotope mass number, we can determine the number of subatomic particles as follows:

Protons: 6 (same as the atomic number)

Neutrons: 14 - 6 = 8

Electrons: 6 (same as the number of protons in a neutral atom)

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